Service manual

PN 4237242C
4.10-2
SERVICE AND REPAIR PROCEDURES
MEMBRANE KEYPAD AND DISPLAY
6. Remove the four KEPS nuts and four flat washers (on the back of the display) that fasten
the display to the keypad.
7. Remove the display, being careful not to lose any of the four spacers underneath it.
Installation
1. Fasten the new display and keypad together:
a. Place the spacer hardware on each threaded post.
b. Install the display on the posts.
c. Place a flat washer on each post.
d. Thread the KEPS nut.
2. Feed the three cables through the chassis opening, being careful not to snag one of the
connectors as you pull the cables through the chassis opening (Figure 4.10-1).
3. Fasten the keypad/display assembly to the chassis with the eight, #2 Phillips-head
screws.
4. Reconnect the cables (Figure 4.10-1):
a. The display cable (ribbon) to J4 on the URA card.
b. The keypad cable (flex) to J5 on the URA card.
c. The keypad flex cable shield ground to its connection post on the chassis.
Note: Make sure that these cables do not interfere with the travel of the traverse rack.
5. Replace the top cover and turn ON the instrument’s power.
Verification
1. Navigate through the instrument’s menus, and run a sample cycle to verify the operation
of all the keypad switches.
2. Observe the display and check for any problems with the visual output, as you check the
operation of the keypad switches.
3. If no problems are observed, perform an SVP (Heading 5.1).